Stop mechanism for bobbin strippers



Sept. 13, 1932. w. H..TROGDON STOP MECHANISM FOR BOBBIN STRIPPERS FiledMarch 24. 195 1 2 Sheets-Sheet 1 Sept, 13, 1932. w H. mosoon STOPMECHANISM FOR BOBBIN STRIPPERS Filed March 24, 1951 2 Sheets-Sheet 2Patented Sept. 13, 1932 HTE YATES WILLIAM' H, TROGDON, F WORTHVILLE,NORTH CAROLINA, ASSIGNOR TO THE TER- PwELL MACHINE COMPANY, OFCHARLOTTE, NORTH CAROLINA, A CORPORATION OF NORTH CAROLINA STOPMECHANISM FOR BOBBIN STRIPPERS Application filed March 24, 1931. SerialNo. 524,914.

The invention relates to bobbin stripping machines, and moreparticularly to improyed means for automatically stopping the machine byaction of a misplaced bobbin.

The invention is especially adapted for application to or incorporationin machines of the character disclosed in United States patem to E. A.Terrell, No. 1,740,128, Dec. 17 1929, or other bobbin strippers in whichthe structure or mode of operation are analogous.

In stripping machines of the character contemplated, the waste-carryingbobbins are directed by a chute or guideway, having a curved or arcuateportion, and delivered one by one to devices which include means forsupporting a bobbin in stripping position, stripping blades which closeabout the bobbin, and means which push the bobbin-head foremost frombetween the stripping blades substantially in the direction of its axis,the waste being removed from it during such movement. These machinesalso have an arcuate guard, parallel to the arcuate chute rails orguides, movably mounted on the chute structure and overlying the headsof thebobbins therein, to prevent or limit outward displacement andoverlapping of the heads, so that they will descend accurately intostripping position with the proper zone of their length between thestripping blades so as to insure such blades engaging between thebobbin-head and the residual mass of waste on the barrel and insureclean stripping. A clutch controls the driving of the bobbin-advancingmeans.

The present inventionprovides means intermediate the movable guard andthe clutch, which acts to release the clutch and stop the machine, andespecially to stop the bobbinadvancing means, which at the time isacting on the bobbin, when the guard is displaced to a predetermined orabnormal extent, by a bobbin misplaced in its approach to the strippingposition. Thus, the mach ne is pre-. vented from continuing to operateafter the guard has been displaced to a predetermined extent in excessof the movement imparted to it by any bobbin suitably positioned to beproperly and completely stripped.

The characteristics and advantages of the invention are furthersufficiently explained in connection with the following detaildescription of the accompanying drawings, which show preferredembodiments.

In the drawings, r

Fig. 1 is a side elevation of a bobbin stripper of the character aboverefered to, with mechanism embodying the invention in one preferredform, incorporated therein or applied thereto, parts of the machinewhich are not essential to an understanding of the invention beingomitted.

Fig. 2 is a section at 2-2, Fig. 1. Fig. 3 is a detail view of alever-and-link connection. 1

Fig. 4 is a plan detail of the front end of the machine, withsome partsin section.

Fig. 5 is a diagrammatic detail of supporting means for the bobbin headin an initial stripping position.

Fig. 6 is a side elevation of a modified feed-chute, including anauxiliary guide, or

bobbin-positioning member.

The invention is adapted or adaptable to stripping machine of thegeneral character disclosed in the above-mentioned patent, whichincludes, as shown therein, a base, or longitudinal main frame-piece 1,supported on legs 2. Bobbin-supporting and guiding. means are located onthe frame-piece, includ ing spaced side-plates or castings 3 havinghorizontal portions or extensions 4 supporting fiaringly-arranged platesor boards 5, constituting a bobbin-receiving hopper 6. The sideplates 3provide a generally downcurved or arcuate bobbin-chute or guideway 7,including rails 8 extending from the front ends of the hopper-walls 4arcuately downward along the upper edges of the chute-walls 3, tosupport slidingly the bobbin-heads and guide the bobbins to initialstripping positi on. In this movement the bobbin barrels or shanks passbetween arcuate barrel-guidestrips 80, supported on the hopper and chuteside-plates by rods 9 passing through bosses 10 and secured byset-screws 11, whereby the guide-strips are positioned in accordancewith the barrel-diameter. In this movement,

tor or segmental rack 12, terminating in a smooth Vertical guide-face 13leading to a tip-support 1% consisting of spring-actuated fingers, tosupport a tip just above initial stripping position.

An arcuate guard-strip 15 is positioned parallel and in spaced relationto the guiderails 8, and is coextensive therewith, outwardly-overlyingthe bobbins-heads as they move in contact, in an arcuate row, downwardin the chute, and acting to prevent outward displacement, overlapping,etc., of the heads. The guard is movably mounted, as by a pivotal orhinge-connection at 16 to a bracket 17 on a side-plate 3, and is urgedinwardly, or toward the chute-rails, as by a spring 18 tensioned betweenit and a bracket 19 on the side-plate.

To limit adj ustably such inward movement, a bracket arm 20 is securedto the guard and lies alongside one of the chute sideplates 3. Thisbracket arm has a lug 21, and a set-screw 22 passes through a threadedhole in this lug and its end engages a stop-lug on another bracket 23secured to the side-plate. The screw is held in adjusted position by alocknut 24.

At its lower end the guard is arranged to cooperate with an uppersegment of the endface of the bobbin-head in initial stripping position,to position the bobbin in relation to stripping blades 90 and 91, withits head on head-supporting members 32 associated with the blades, and abobbin tip-receiving socket in a pusher, later referred to. Thislocating action of the guard-end as here shown is provided for by anend-piece 25 secured to the guard-end, and having an inb ent end orfinger 26 constituting a stop, or head-positioning member of the guard,which with the guard is displaced outwardly a moderately normal distance(toward the right, Fig. 1) as the bobbin is advanced in the early partof the stripping action, and then, when freed from contact with thecylindrical portion of the head, returns to normal. position, as shown.

A plunger 27 has a beveled inward face to engage the barrel of a bobbinsupported by its head resting on the supporting memhere 32 and its tiprestin in the tip-support 14; above mentioned. This plunger is operatedby means fully described in the abovement-ioned patent, to force thebobbin-tip downward (with accompanying separating movement of thefingers constituting the tipsupport) to and into a socket 28 on apusnhead or slide 29, which is mounted in guides on the frame and isreciprocated longitudinally of the machine by means also shown in detailin said patent. The tip is thus placed in front of a pushing face 30 onthe slide, and the bobbin-barrel is also properly located in relation tothe stripping blades 90, 91. The blades are now advanced to engage thebarrel of the bobbin in close proximity to the head thereof, and thepush-head is advanced (toward the right in Fig. 1) to move the bobbin inthe direction of its axis, and strip the waste therefrom, or move thewast-e relatively toward the tip, by the action of the stripping blades,during which movement the head is grasped by jaws on a pull-head, andthe stated bobbin movement, and stripping of waste therefrom, arecompleted. 7

The machine is driven by an initial driving member such as a pulley 33revoluble on a shaft 34, under control of a clutch 35. The movableclutch element, or cone, 36 is shifted by a fork 3'? carried by arockshaft 38 supported by frame-brackets 39, and having a hand-lever 4:0for normal clutch operation.

For various reasons, including improper location or movement of thebobbins in the guide chute, faulty action of the plunger 27 orguard-finger 26, or especially owing to accumulation of particles ofwaste, or lint, in the chute, the head of abobbin approaching the lowerend of the chute may be retarded and held in an upward position,confronting a lower portion of the guard 15 or its end piece 25, whilethe tip is placed by the action of plunger 27, in the socket 28 ofpush-head 29. The next forward movement of the push-head will advancethis misplaced bobbin in its axial direction, but at an upwardlyinclined angle, and against the guard strip; and since the guard ismovably and yieldably mounted to prevent breakage of the guard or of thebobbin, the movement of the bobbin a distance corresponding to the fulladvancing movement of the push-head will displace the guard to anabnormal degree, and cause displacement of bobbins lying in the chuteabove the misplaced one referred to, with possible injury or breakage ofthe bobbin which is ammed between the pushhead and the guard, andusually resulting in tipping up the remaining bobbins in the chute insimilar relation.

Tn combination with the known structure described hereinbefore, theinvention provides means intermediate the guard and clutch, acting uponadvance of such a misplaced bobbin, and movement of the guard to apredetermined extent, or beyond a normal range of movement to disconnectthe clutch and stop the machine, and discontinue the advancing movementof the bobbin so as to permit restoration of the disarranged bobbinsincluding the wrongly-delivered one be fore damage shall be done eitherto the bobbins or to the machine, and also to discontinue the advancingmovement of the bobbin.

Such operative connection of the guard to the clutch may vary greatly.As shown, in the structure chosen as one preferred embodiment, a leveri5 is mounted for oscillation at a convenient point on one of thechute-castings or side-plates 3. Desirably, for this lever-mounting, Tutilize a suitable one of the rods 9 above referred to, which supportthe bobbin barrel guide-strips 80. This rod is made of such length thatit extends outward considerably beyond the boss 10 in which it ismounted; and on this projecting rod-portion a bushing 46 having an endflange 4.7 is placed and secured as by a screw 48. The lever has a hubformation oscillatably mounted on the bushing, and held against outwarddisplacement by the flange a7.

Lever arm 50 is connected to the guard 15 by suitable means, such as aspring-link 51, or by other means such as a link with a lost-motiondevice, so as to permit slight or normal movement of the guard withouteffect on the lever or clutch 35. The efiective length or tension of thespring 51 may be adjustable, as by connecting one of its ends to a screw52 which passes through the lever-end 50 and is secured in adjustedposition by nuts 53, engaging opposite faces of the lever. The other endof the spring may conveniently be connected to the guard, by placing andsecuring an angle bracket 54 under lock-nut 24: of set-screw 22 abovereferred to, and securing the spring end to' this bracket. -The upperarm 55 of the lever is connected by a link 56 to an arm 57 secured onthe clutch-operating rockshaft 38 above mentioned. Lost-motion means isprovided in this linkage, consisting as shown of a slot 58, in whichengages the angularly bent end-portion 59 of the link-rod. A cotterpin60 or the like inserted through the rodend and a washer 61 thereunder,prevent dis-v placement from the slot. By this means the clutch may bereleased or engaged by'manipulation of its hand-lever 4:0 in theordinary way, to start and stop the machine, without effect upon thelink system operatively con necting the clutch to the guard; Theconnection of the link 56 to arm 57 may be adjustable, as by providing ascrew-thread 63, Fig. 3, on the link-rod, engaged in a block 64-, whichhas a swivel mounting in the end of the arm.

In operation, whenever a bobbin is misplaced in themanner above referredto, that is, with its end located in front of the pushface 30 and itshead in engagement with the member 25 above its stop-finger 26, or inengagement with the guard proper, when the push-head is advanced, thebobbin is moved in the direction of its own .axis and the head engagingwith the guard moves the guard outward beyond its range of movement innormal stripping operations, and as'soon as the guard is so moved to anabnormal degree. spring 51 is tensioned sufficiently to oscillate lever4:5; link 56 having its offset end portion located at the right-hand endof lever-slot 58 (as viewed in Fig. 1) is thus moved rearward, acting onarm 5'? to oscillate the clutch rockshaft 38 and move the avoidinginjury to the guard or derangement of other parts of the machine andinjury to the bobbin.

After the misplaced and disarranged bobbins have been-put in order, themachine ,is

restarted by reengagement of the clutch and 6 then functions normallywithout action of the stop mechanism until another bobbin is improperlylocated adjacentthe stripping position.

Spring 51 may be so adjusted by means of screw 52 and nuts 53 that withthe guard in normal position as shown, the spring is practically slackor under only slight tension.

When the guard is moved a slight. distance outward as in normaloperation, the spring is then only moderately additionally tensed andits pull is insufiicient to cause clutch release; 3

but when the guard is moved farther, or to an abnormal extent as abovereferred to by action of a misplaced bobbin, the spring is additionallytensioned sufficiently to release the clutch and this releasing actionoccurs before the bobbin or the guard is moved far enough to causedamage or derangement.

The spring 51 broadly represents any suitable means or. element in thestop action linkage, or intermediate lever 4:5 and the guard, forpermitting a normal guard movement and for effecting the stop actionupon occurrence of abnormal guard movement. As briefly referred toabove, instead of such a spring or spring-link, I may employ a linkrodwith a stop or shoulder arranged to engage the lever-arm 50 with slightlost motion, sufficient to permit normal guard movement, and in case ofabnormal movement acting to move the guard lever positively for areleasing action.

Fig. 6 shows a modification in which the main guard 15 is constructedand arranged as'in the previous example, except that its lower end 100is located substantially horizontally opposite the lower end of the headguide-rails 8, and in such position that bobbin-heads advanced in anormal stripping action will not engage the end of the guard. Theclutch-releasing mechanism is connected to this main guard 15 in themanner previously described.

An additional or auxiliary guard or bobbin-head guiding and positioningmember 102 in the form of an arcuate strip, is pivotally mounted at 103on an upwardly-extended portion of bracket 17 which also pivotally supports the main guard. The auxiliary guard normally rests against thelower end of the main guard, and is held in this position by a spring10%, tensioned between it and springbracket 19 to which spring 18 of themain guard is also connected.

The lower end 106 of the auxiliary guard projects below the end of themain guard, serves properly to guide bobbin-heads therefrom to strippingposition, and is arranged or adjusted to slightly overlap and engage orconfront an upper segment of the outer face of a bobbin-head when innormal stripping position between the blades. The end of the auxiliaryguard-strip thus acts as a stop, or positioning member, to locateproperly the head and barrel of the bobbin in relation to the strippingblades; and when the bobbin is advanced by the push-head in a strippingaction, the bobbin-head passes below the end 100 of the main guard 15,which is not displaced; the head in this movement engages and displacesthe auxiliary guard outwardly until its end is freed from engagementwith the head, whereupon the guard is brought back to normal position byits spring 10 i, ready to position the next bobbin for stripping.

When a bobbin is misplaced in the manner previously described, that is,located in an outwardly-upwardly inclined position, with its tip in thepush-head socket and its head confronting a portion of the main guard15, themain guard is displaced outwardly, when the bobbin is advanced bythe push-head, as in the previous example, and the stop-mechanism actsto throw out the clutch and stop the machine, just as before described.

Since in this embodiment the auxiliary guard serves to position thebobbin which is being stripped, and the main guard is out of range ofsuch bobbin and not moved in any way by the bobbins except when thelowermost one gets out of proper relation, a much closer setting of thespring 51 is possible, serving to bring the machine to rest even morepromptly to prevent damage upon a relatively slight movement of the mainguard.

The guards of Figs. 1 and 6 are not of my invention, and are claimedonly in connection with the features of the present stopmechanism, beingdealt with per sein another application.

it will be evident to skilled persons that the present stop mechanism isadapted or adaptable to other stripping machines having asimilar orequivalent organization or mode of operation, and also that in the lightof the illustrative embodiment herein shown and described manyvariations may be made with out departing from the principles disclosed;and l contemplate employment of any structures that are properly withinthe scope of the appended claims.

ment of the bobbin and stripping means, and

stop mechanism intermediate said guiding member and the driving meansand acting to discontinue driving when said member is moved by amisplaced bobbin in a stripping action, the stop mechanism includingmeans permitting normal connection and disconnection of the drivingmeans. 7

A. bobbin stripping machine having in combination driving means,stripping means,

a guide directing bobbins toward stripping position and movable by amisplaced bobbin in a stripping action, an independently-movablepositioning member cooperating with the bobbin in stripping position,and stop mechanism intermediate the guide and the driving means andacting to discontinue driving when the guide is moved by a misplacedbobbin.

4. A bobbin stripping machine having in combination driving means,stripping means,

a guide directing bobbins toward stripping I position and movable by amisplaced bobbin in a stripping action, a positioning member extendingbeyond the guide and cooperating with the bobbin in stripping position,and

stop mechanism intermediate the guide and the driving means and actingto discontinue driving when the guide is moved by amisplaced bobbin.

5. A. bobbin stripping machine having in combination driving means,stripping means,

a movable guide directing bobbins toward stripping position, meansyieldably retaining the guide in normal position, a positioning membermovable in relation to the guide and adapted to direct bobbins therefromto stripping position, and a connection from the guide to the drivingmeans acting to interrupt driving when said guide is moved by amisplaced bobbin in a stripping action.

6. A bobbin stripping machine having in combination driving means,stripping means, feeding means, a head-positioning member adapted to bemoved during each stripping action by a bobbin properly positioned forstripping, and a second member adapted to receive movement from animproperly positioned bobbin to unship the driving means.

7. A bobbin stripping machine having in combination driving means,stripping devices,

feeding means including a head-guard guiding the bobbins in the feeding,means combi'ning the head-guard and the driving means to unship thelatter when a bobbin is pressed against the guard in a stripping action,and means independent of the head-guard to continue the guiding actionwhile the bobbin moves into proper stripping position after leaving thehead-guard.

8. In a bobbin stripping machine having in combination, feeding meansincluding a bobbinguiding member, and a stop-motion operably connectedto such member to stop the machine when the member is actuated by amisplaced bobbin, such member terminating its guiding function short ofstrip ping position, and a second bobbin-guiding member continuing theguiding action beyond the range of the first and controlling the bobbinin a stripping position.

9. A bobbin stripping machine having in combination stripping means, achute adapted to turn bobbins from vertical to horizontal ositiontherein and to resent them succes-' sively in stripping position, meansfor causing relative movement between the bobbin and stripping meanslongitudinally of the bobbin, power driving means, an arcuate guardoverlying the bobbin heads in the chute to cooperate in thus turning thebobbins anterior to stripping position, andmeans actuated by a movementof said guard for unshipping the driving means.

10. A bobbin stripper having in combination driving means, strippingmeans, a movably mounted guide directing bobbins toward strippingposition and adapted to be moved by a misplaced bobbin in a strippingaction, and a linkage connecting the guide to the driving means tointerrupt driving when the guide is so moved and including meanspermitting interruption and resumption of driving independent ofmovement of said guide.

11. A bobbin stripper having in combination driving means, strippingmeans, a movably mounted guide directing bobbins toward strippingposition and adapted to be moved by a misplaced bobbin in a'strippingaction, and a linkage connecting the guide to. the driving means tointerrupt driving ,when the guide is so moved and including meanspermitting movement of the parts in excess of that necessary tointerrupt the driving.

12. A bobbin stripper having in combination stripping means, means forpresenting bobbins successively in stripping position, means for movinga bobbin relatively to the stripping means in a stripping'action,driving means, a movable guard overlying the bobbin heads anterior tostripping position, and means including a resilient connection actuatedby movement of the guard for effecting unshipping of the driving meansto stop the machine.

' 13. A bobbin stripper comprising in combination stripping means, meansfor present-. ing bobbins successively in stripping position, means formoving a bobbin substantially longitudinally in a stripping action,driving means, amovable guard overlying the bobbin-heads anterior tostripping position, means urging the guard to normal position, and alinkage from the guard to the driving-means acting to disconnect thelatter upon movement of the guard due to a misplaced bobbin, saidlinkage including a spring which accommodates normal guard movementswithout clutch-release.

' 14. A bobbin stripper having in combination stripping means, means forpresenting bobbins successively in stripping position, means for movinga bobbin substantially longitudinally in a stripping action, a drivingclutch, a guard movably mounted overlying the bobbin-heads anterior tostripping position, meansurging the guard to normal position, and alinkage connecting the guard to the clutch, said linkage including aspring which accommodates normal guard movements without clutch-releaseand is tensioned by abnormal movements sufliciently to effect clutchengagement.

15.:In a bobbin stripping machine of the general character described, incombination, a bobbin guide-chute, a movable guard, means for advancinga bobbin in the general direction of its axis from an initial strippingposition, and a driver for said advancing means, theguard being normallyactuated by properly placed bobbins in the bobbin-advancing action and,abnormally actuated by a misplaced bobbin, and means intermediate theguard, and clutch and acting upon such abnormal movement of the guard todisconnect the driver.

16. A bobbin stripping machine having in combination, a feed-chute, amovable headguard, a head-positioning member movable in relationto thechute and guard and actuated by normally-advanced bobbin-heads,stripping means, bobbin-advancing means, a, driver, and .meansintermediate the guard and driver and acting when a misplaced bobbin isadvanced against the guard to disconnect the driver.

17. A bobbin stripping machine having in combination, a feed-chute, amain headguard movably mounted on the chute, an auxiliary guard movablymounted on the chute and having a head-positioning member projectingbelow the main guard, stripping means, bobbin-advancing means, a driver,and means intermediate the main head-guard and driver and acting when amisplaced bobbin is advanced against the'latter guard to disconnect thedriver.

18. In a bobbin stripping machine, in combination, stripping means,means for moving a bobbin in relation to the stripping means in astripping action, driving means, an arcan arcuate feed-chute, a movableguard over i bobbin in a stripping action.

19. In a bobbin stripping machine, in comblnation, stripping means,means for movmg a bobbin in relation to the stripping means 1n astripping action, driving means,

lying heads of bobbins located along the chute, and a linkage connectingthe guard to the drlvlng means to disconnect the latter When the guardis moved by a misplaced bobbin in the stripping action.

20. lln a bobbin stripping machine, in cornbination, stripping means,means for moving a bobbin in relation to the stripping means in astripping action, driving means, an arcuate feed-chute, a movable guardoverlying heads of bobbins located along the chute, and a linkageconnecting the guard to the driving means to disconnect the latter whenthe guard is moved by a misplaced bobbin in the stripping action, thelinkage including a spring tensioned by the guard movement, andpermitting movement of the guard by a bobbin in a normal strippingaction Without disconnection of the driving means.

21. A bobbin stripping machine having in combination driving means,stripping means, a movable guide directing bobbins toward strippingposition, means yieldably retaining the guide in normal position, apositioning member movable in relation to the guide and adapted todirect bobbins therefrom to stripping position, and a connection fromthe guide to the driving means acting to interrupt driving When saidguide is moved by a misplaced bobbin in a stripping action, the guidebeing arranged to permit movement of a bobbin in a normal strippingmovement Without contact With the guide, and the positioning memberbeing arranged for engagement and displacement by a bobbin in eachnormal stripping action.

22. A bobbin stripping machine having in combination stripping means,means for feeding bobbins successively into stripping position, meansfor moving a bobbin in relation to the stripping means in a strippingaction, driving means, a guard overlying and positioning the bobbinheads in advance of stripping position, the guard being movably mounted.and having a moderate movement in cooperation with the bobbin in eachnor mal stripping action and also having a greater movement uponengagement by an angularly misplaced bobbin as urged by saidbobbin-moving means, and means actuated by such greater movement of theguard for effecting release of the driving means and stoppage of themachine.

28. A bobbin-stripper having in combination stripping means, means forpresenting bobbins successively in stripping position, driving means, amovable guard overlying the bobbin-heads anterior to strippingposition,and means including a resilient connection actuated by movement of theguard for effecting unshipping of the driving means to stop the machine,said resilient connection providing for a moderate movement of the guardWithout a stopping action and for effecting a stopping action upon agreater movement of the guard.

24. A bobbin-stripper tion stripping means, means for guiding andpresenting bobbins successively in stripping position, means for causingrelative movement between the bobbin and stripping means longitudinallyof the bobbin, power driving means, a guard simultaneously positioning aplurality of bobbin-heads anterior to stripping position, and meansactuated by a movement of said guard for unshipping the driving means,the means last named being adapted to permit shipping and unshipping ofthe driving means Without movement of the guard. I

25. A bobbin-stripper having in combination stripping means, means forpresenting bobbins successively in stripping position, means for movinga bobbin in relation to the stripping means in a stripping action, powerdriving means, a guard overlying bobbin-heads anterior to strippingposition, the guard being movably mounted and having a moderate movementin cooperation With the bobbin in each normal stripping action, and alsohaving a greater movement upon engagement by an angularly misplacedbobbin, and means actuated by said greater move ment of the guard foreffecting unshipping of the driving means and stoppage of the machine,said last named means comprising a linkage intermediate the guard andclutch providing for said normal movement of the guard Withoutclutch-release and efiecting clutch-release upon said greater movementof the guard.

26. A. bobbin-stripper comprising in combination stripping means, meansfor presenting bobbins successively in stripping position, means formoving a bobbin substantially longitudinally in a stripping action,driving means, a guard overlying the bobbinheads anterior to strippingposition, the guard being movably mounted, means urging the guard tonormal position, a rock-lever connected to the driving means, and a linkconnecting the rock-lever to the guard.

27. A bobbin-stripper having in combi nation stripping means, means forpresenting bobbins successively in stripping position, means for movinga bobbin substantially longitudinally in a stripping action, drivingmeans, a guard overlying the bobhaving in combina- Y its 1 guidesbetween the side-plates, a rod passbin-heads anterior to strippingposition, the I guard being movably mounted, means urging the guard tonormal position, and a linkage connecting the'guard to the driving meansand acting upon movement of the guard caused by a misplaced bobbin in astripping action to disconnect the driving means and stop the machine,said linkage including a lost-motion device operatively intermediate thedriving means and the guard and permitting normal operation of thedriving means Without effect upon the guard. V

28. In a bobbin-stripping machine of the character described,a'feed-chute including spaced side-plates, spaced bobbin-barrel ingthrough one of the side-plates and supporting one of the barrel guidesand having an outwardly-extending portion, a stripper, a movable guardoverlying bobbin-heads located along the chute, driving means, a leverpivotally mounted on said outwardlyextending rod portion, a linkconnecting the lever to the guard, and a link operatively connecting thelever to a movable element of the driving means to effect stoppage ofthe machine upon movement of the guard caused by a misplaced bobbin.

29. In a bobbin-stripping machine, in combination, stripping means,means for moving a bobbin in relation to the stripping means in astripping action, driving means, an arcuate feed-chute, a movable guardover-v lying heads of bobbins located along the chute, and a linkageconnecting the guard to the driving means to disconnect the latter Whenthe guard is moved by a misplaced bobbin in the stripping action, thelinkage including a spring tensioned by the guard movement.

WILLIAM H. TROGDON.

